通过Docker中的Nginx的多个版本的PHP

Question

我为PHP5.6运行了两个docker容器：

docker run --name php5 \
    -v /html1:/var/www/html/site1 \
    -d -p 9001:9000 php:5.6-fpm

对于PHP7：

docker run --name php7 \
  -v /html2:/var/www/html/site2 \
  -d -p 9000:9000 php:7-fpm

我用Nginx运行Docker容器：

docker run --name nginx-cache \
  -v /nginx.conf:/etc/nginx/nginx.conf \
  -v /nginx/html1:/var/www/html/site1 \
  -v /nginx/html2:/var/www/html/site2 \
  -v /sites-enabled:/etc/nginx/sites-enabled/ \
  --link php5 --link php7 -d -p 9999:80 nginx

与nginx.conf：

user  nginx;
worker_processes  1;

error_log  /var/log/nginx/error.log warn;
pid        /var/run/nginx.pid;

events {
    worker_connections  1024;
}

http {
    sendfile on;

    gzip              on;
    gzip_http_version 1.0;
    gzip_proxied      any;
    gzip_min_length   500;
    gzip_disable      "MSIE [1-6]\.";
    gzip_types        text/plain text/xml text/css
                      text/comma-separated-values
                      text/javascript
                      application/x-javascript
                      application/atom+xml;
    gzip_disable      "msie6";


    ##
    # Basic Settings
    ##

    server_names_hash_bucket_size 64;

    tcp_nopush on;
    tcp_nodelay on;
    keepalive_timeout 65;
    types_hash_max_size 2048;
    client_body_buffer_size 128k;

    include /etc/nginx/mime.types;
    default_type application/octet-stream;

    ##
    # Logging Settings
    ##

    access_log /var/log/nginx/access.log;
    error_log /var/log/nginx/error.log;

    ##
    # Virtual Host Configs
    ##

    include /etc/nginx/conf.d/*.conf;
    include /etc/nginx/sites-enabled/*;

}

使用site1配置：

server {
        listen 80 default_server;

        server_name site1;

        root /var/www/html/site1/;
        index index.php index.html index.htm default.html default.htm;

        fastcgi_buffers 8 16k;
        fastcgi_buffer_size 32k;
        fastcgi_read_timeout 180;

        location ~ \.php$ {
            fastcgi_pass  php5:9001;
            fastcgi_index index.php;
            include fastcgi_params;
            fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
            fastcgi_param SERVER_NAME $server_name;
        }
}

和site2配置：

server {
        listen 80;

        server_name site2;

        root /var/www/html/site2/;
        index index.php index.html index.htm default.html default.htm;

        fastcgi_buffers 8 16k;
        fastcgi_buffer_size 32k;
        fastcgi_read_timeout 180;

        location ~ \.php$ {
            fastcgi_pass  php7:9000;
            fastcgi_index index.php;
            include fastcgi_params;
            fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
            fastcgi_param SERVER_NAME $server_name;
        }
}

对site2的此请求为200 OK，且响应正确：

curl -X GET \
  http://localhost:9999/index.php \
  -H 'host: site2'

对于site1的请求：

curl -X GET \
  http://localhost:9999/index.php \
  -H 'host: site1'

在Nginx容器日志中，我总是看到：

2017/04/26 21:18:27 [错误] 7＃7：在连接到上游时，* 1 connect（）失败（111：连接被拒绝），客户端：172.17.0.1，服务器：site1，请求：“ GET / index .php HTTP / 1.1”，上游：“ fastcgi：//172.17.0.3：9001”，主机：“ site1”

任何解决此问题的想法将不胜感激。

Answer 1

好吧，我解决了，这是一个非常愚蠢的错误。由于某种原因，我假设如果我这样暴露端口9001：

docker run --name php5 \
    -v /html1:/var/www/html/site1 \
    -d -p 9001:9000 php:5.6-fpm

那么该端口9001应在连接到另一个php5容器的Nginx容器中使用。这是错误的，因为公开的网络连接与链接的网络连接不同。

因此正确的site1配置应如下所示（端口也是9000）：

server {
        listen 80 default_server;

        server_name site1;

        root /var/www/html/site1/;
        index index.php index.html index.htm default.html default.htm;

        fastcgi_buffers 8 16k;
        fastcgi_buffer_size 32k;
        fastcgi_read_timeout 180;

        location ~ \.php$ {
            fastcgi_pass  php5:9000; # <-- BOOOM!
            fastcgi_index index.php;
            include fastcgi_params;
            fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
            fastcgi_param SERVER_NAME $server_name;
        }
}